Think of your browser as a border guard: it checks documents before letting someone in. If a site doesn’t have a full set of trusted certificates, its “passport” will be questioned. This is where the CA Bundle comes into play.
It’s one of the oldest and most essential parts of the internet.
When someone types http://yourdomain.com into their browser, that request is sent through port 80 — unless it’s redirected to a secure HTTPS connection using port 443.
One of the simplest and most effective ways to enhance security is to install an SSL certificate. But what exactly is its value, and how does it affect users’ and search engines’ perceptions of your resource?
A PEM file is a text file containing one or more certificates and, optionally, a private key. (While a CRT file only contains a single certificate.) Below are different ways to create a PEM file, depending on your installation needs.
They are responsible for ensuring that your data does not fall into the hands of intruders while traveling online.
What are SSL and TLS in simple terms
We recommend doing this 30 days before the current expiration date; this approach saves the remaining days and helps to avoid downtime on the site.
If you’re facing the “NET ERROR_CERT_AUTHORITY_INVALID” (or what’s sometimes referred to as “ERR_CERT_AUTHORITY_INVALID” or “NET::ERR_CERT_AUTHORITY_INVALID”) error in Google Chrome, then you’re not alone. Thousands of users around the world face this pesky SSL error, and it’s irritating to say the least.
If you’re looking for a solution through this post, you’re either a website owner whose website is facing this error or you’re a user who wants to access a particular website that’s displaying this error message. In either case, this post will help to solve the SSL certificate error in Chrome.
Did you know that every SSL/TLS certificate is issued with a specific validity period? This period encompasses the certificate’s issuance and expiration dates. So, if you see the SSL/TLS certificate-related error messages “NET_ERR_CERT_DATE_INVALID” or “SEC_ERROR_EXPIRED_CERTIFICATE ” in your browser when using Chrome or Firefox, it typically means the site’s SSL/TLS certificate is being used beyond its validity period and is no longer trustworthy.
In other words, any site using this certificate isn’t secure, and any data transmitted is at risk of compromise by man-in-the-middle (MitM) attacks. Not to mention the business risks and downtime issues your site or services will experience as the result of an expired certificate.
The public key the web browser uses to verify the validity of the SSL/TLS certificate’s signature is incorrect or isn’t pinned to the HTTP header. Key pinning may help you minimize the risk of MITM attacks. However, if you don’t do it right, it can do more harm than good.
Considering that Firefox, Chrome, and other major browsers have eliminated support for HPKP (i.e., HTTP public key pinning), it means that sites shouldn’t be using it.
Did you see (or did someone else inform you) the SSL protocol error ERR_SSL_UNRECOGNIZED_NAME_ALERT or SSL_ERROR_UNRECOGNIZED_NAME_ALERT on your site?
Let’s explore what this HTTPS unrecognized name error means and how to fix it quickly.
Petar N.Feb. 2025
"Excellent platform with a wide selection of solutions suitable just for you here you can find the right certificate just for your purposes and at the best prices. The support is very good. I highly recommend cheapsslsecurity.com to anyone who needs a certificate."
Raed NeshiewatFeb. 2025
"Very fast delivery. Installation was easy with no problems. If you are installing a wildcard SSL certificate on cPanel, you need to specify the actual domain name, don't try to install it on *.domain.com , you have to install it on each subdomain such as admin.domain.com, shop.domain.com,..etc. Use the same certificate for each subdomain you install. Good luck!"
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